Switching system



L. E. COON.

SWITCHING SYSTEM.

APPLICATION FlLED JUNE 24.1919.

1,381,45 1-. Patented June 14, 1921' Les/f6 f. 600/7.

' To all whom it ma concern:

L J-NITED STA'IMENT OFFICE.' Z..

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I citizen of the United States, residing at Chatham, in the county of Morris, State of New Jersey, have invented certain new and useful Improvements in Switching Systems, of which thefollowing is a full, -clear, con cise, and exact description. ,r

This invention relates toswitch'mg'systems and more particularly to systems of this nature in which distantly controlled selectively operable signaling devices are em' loyed.

11 systems of this nature,-:it is sometimes desirable to employ a plurality of selectively operable electroresponsive signaling devices which vary widely in their operating requirements. i

It is the obj ect' of this invention to provide a system of this nature in which a luralitv of electroresponsive devices of wi ely di ferent operating requirements may be selectively operated from a distant point.

To attain this object in accordance with a feature of the invention, electrical switch-' ing means at one station controlled from a distant station over a phantom circuit selectively arranges the physical conductors comprising such hantom circuit to prepare a suitable physical circuit for operatin the selected si aling device 7 from the -d1stant station. ore specifically, one slgnalingdevice upon being selected is included in bridge not specifically mentioned above will clearly appear from the following specification and the annexed drawing which shows one embodiment ofthe invention as applied-to a selective signaling system. Referring to the drawing, at a selecting station A, multiply connected sending devices 1, 2' and 3 control' reversin relay 8 to impress current impulses 'ofa ternating polarity upon a phantom circuit comprlsm physical lmes or side circuits 4=5 and 6- and associated simplexing coils 10 to 13, inclusive, of any sultabls. type, leading to a specification of '14" 2 Application filed June 84, I v i plurality: selectable stationszsuch asjB and. (3;; Selectively o rable circuit con-' trolling devices 16 an 23 are includedin bridge ofthe hantom circuit a the seleotable vstations and 0, respectively. The

selectors employed may-be of any suitable type capable of; steprby-ste advancement in response to closelyisucc'ee ingrev'ersed current mpulses recelved through the associated condensers17 and .24 respectively, from the phantom: circuit, an of ad'ustment to z mechanically retain itscontact c osed in responsetoredetermmed series and arrangement of c osely succeeding impulses of this nature. suitable selector oftthis nature is disclosed in, Patent No. v1 343 56, issued ..F1eld. A

current to the conductors ii-*5 to contro the 1" operation of signaling lamps 22 and-29 at statlons B and C respectively, by'means of relays 20 and 27.

It is thought that the invention ma. be more fully comprehended froni.the followmg description of the operation of the sys- 'temshown on the drawing. of one of-the physical. lines or-side circuits Assuming that it isdesired to light signal lamp 22 at station B, sending device 1 is actuated. As the sprin member enga'es the first'f'tooth of the sending devicel re ay 8 operates 'over a circuit extending from battery, through the winding of relay 8,- the contact of the sending device 1- to pulse of one polarity over the phantom circuit. Selectors 16 and 23 receiving this impulse. through condensers 17 and 24, respectively, from the associated sini'plexing coils ground, thereby transmitting a current im- 12 to 15 inclusive, advanceione' step when. i

.1 the spring member offithe sending device disenga es the tooth-.relay8 releases to transmit a c osel succeeding current impulse-of reversed'po arity over the phantom circuit;

Additional impulses 1 are trar'ismittedfiaver the hantom circuit as the spring member ages the succeeding teeth, one impulse. bemg transmitted by", each engagement. and

. of t e sending device engages anddisen- 31 of rela 20, and the winding of role 21 another closely succeeding impulse being transmitted by the subsequent disengagement. When sending device 1 has been completely actuated, the proper series of closely succeeding impulses has been transmitted to causeselector 16 to attain its mechanically retained position with'it's arm 18 engaging contact 19, thereby bridging rela 20, across thephantom circuit. Selector 2 not being adjusted for such series of impulses is restored to normal. Relay 20 operates due to the current flowing through its windin from the simplexing coils 12 and 13 an closes its contacts 30 and 31. The key 32 may then be operated to cause the operation of relay 21 over a circuit extending from battery, through the contacts of key 32, conductors 4 and 5 in parallel, .contacts 30 and to groun Lam 22 is thereuponlig ted over an obvious circuit and remains lighted while the key 32 is actuated.v Since selector 16 is mechanicall retained in its advanced osition the signa lamp 22 may relighted )y the. key 32 if des1red. A-clearing-out sending device 3 similar to sending device 1 is then actuated to transmit a series of impulses over the hantom circuit ada ted to release an mec anieally retained se ectors, thereby re easing selector :16.

In case it is desired-to light lamp 29 at station 0, sending device 2 similar to sending device 1 is then act'uated,.in the manner described, to transmit a diflferent series of reversed current impulses dver the phantom circuit. As reviously' described, selectors 16 and 23 bot advance one step in response to each impulse of the seriesbutselector '23, being adjusted for the particular series beingtransmitted, is mechanically retained in its advanced position with its-contact arm 25 engaging its contact 26, while selector 16,

not being adjusted for such series, restores to normal upon the cessation of such series.

Relay 27, thereby bridged across the phantom circuit, operates upon current received from simplexing coils 14 and 15. Relay 28 is thereu on brid ed across conductors 4 and 5. T 'e actuation of key 33 completes a circuit from one side of battery through one contact of key 33, conductor 5, the contact at relay'27, the winding of relay 28, conductor 4, and the other contact of key 33 to the other-side of battery. Lamp 29 thereupon lights over an obvious circuit and remains lighted while key 33 isactuated. As before, rangement of the selected selector, the relay '28; may be reoperated'to reli ht lamp 29 by I he subsequent:v iactuationof the clearing-out sendin devicethe reactuation of key 33.

3 releases the operated selector'as be restores the system to 'nermal.--

' It-is evident that-in a I this invention it is possible to selectively arore and ue to the mechanically retained arsystem embodying j range thephysicalconductors of a phantom responsive devices di ering widely in their operating requirements.

It is also understood that the, devices to be 0 erated and their associated selectors may e located at the same station instead of at difierent stations, as shown in the drawing.

What is claimed is:

1. In a switching system, a phantom circult, means for transmitting 1 current impulses over the phantom circuit, a plurality of selectively operable switching devices associated with the phantom circuit and responsive to such impulses, and means indivldual to each of said devices and controlled thereby for arranging physical conductors of the phantom circuitin difiering predetermined circuit relations.

2. In a switching system, a phantom circult, means for transmitting current impulses over the phantom circuit, a plurality of switching devices associated with the phantom circuit responsive to such im )ulses, a relay individual to each of said evices and controlled thereby for arranging predetermined physical conductors of the hantom circuit in differing circuit relatlon, a signaling device associated with each switching device and adapted for inclusion in circuit with the selectively arranged physical conductors, a source of current, and means to associate the source of current with the selectively arranged'conductors for operating the signaling device associated therewith.

In a switching system, a phantom circuit, a selecting station and a plurality of selectively operable Switching devices associated therewith, means at the selecting station to transmit current impulses over the phantom circuit to advance any of the switching devices into a redetermined osition, means controlled )y each switching device to prepare a circuit including the physical conductors comprising a side circontrolled thereby;-

41" In asignalin stem a luralit of line conductors afigrd i hg a lurlility o cir-' edits of different electrical c aracteristics, a plurality of-selectively' o erable devices controlled over one of sai circuits, si aling means individual to said devices, an means responsive to the operation of said devices 'for arranging an operating circuit for said signahng means of a character difierent for each one thereof.

5. In a signaling system,. a plurality of line conductors aflordin a plurality of circuits of difierent electrical characteristics, a plurality of electrically controlled devices operable over one of said circuits, signaling means individual to each of said devices,

and a relay individualthereto and respon- 10 In witness whereof, I hereunto subscribe 15 my name this 18th day of June A. D., 1919.

LESLIE E. COON. 

